| 引用本文: | 武江涛,麻震宇,侯中喜,等.平流层飞艇强迫对流特性数值仿真分析.[J].国防科技大学学报,2016,38(2):177-182.[点击复制] |
| WU Jiangtao,MA Zhenyu,HOU Zhongxi,et al.Numerical research on forced convective heat transfer of stratospheric airships[J].Journal of National University of Defense Technology,2016,38(2):177-182[点击复制] |
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| 平流层飞艇强迫对流特性数值仿真分析 |
| 武江涛, 麻震宇, 侯中喜, 柳兆伟 |
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(国防科技大学 航天科学与工程学院， 湖南 长沙 410073)
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| 摘要: |
| 强迫对流换热特性对平流层飞艇热状态有重要影响。以平流层飞艇流线型封闭囊体为研究对象，基于囊体内部纯导热传热的假设，采用计算流体力学方法建立平流层飞艇外部流场三维数值模型，对飞艇外部强迫对流换热特性进行仿真分析，得到了不同太阳照射角度、风速和攻角条件下的飞艇表面温度分布和内部平均温度变化规律，为平流层飞艇热状态预测和热控设计提供参考依据。 |
| 关键词: 平流层飞艇 强迫对流 计算流体力学 数值仿真 |
| DOI：10.11887/j.cn.201602029 |
| 投稿日期：2015-04-20 |
| 基金项目:国家高分辨率对地观测系统重大专项支持项目（GFZX040201） |
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| Numerical research on forced convective heat transfer of stratospheric airships |
| WU Jiangtao, MA Zhenyu, HOU Zhongxi, LIU Zhaowei |
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(College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| During the floating flight, the complex radiation-convection environment remarkably affects the flight performance and security of the stratospheric airship. The forced convection around the stratospheric airship plays an important role in the thermal behavior of the airship. Based on the hypothesis of pure heat conduction inside the airship, a three dimensional CFD model of stratospheric airships was developed and the thermal characteristics of the forced convective heat transfer of the airship were investigated. The distributions of the temperature of skins of the airship and the average temperature of the inner gas were calculated with the variation of the angle of the sun, the wind velocity and the angle of attack. Simulation results can be referenced for the accurate prediction of the thermal behavior of stratospheric airships. |
| Keywords: stratospheric airships forced convection computational fluid dynamics numerical simulation |
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